Table 4.
HRs for hospitalization by warfarin therapy
| Parameter | Warfarin Users(n = 746) |
Warfarin Nonusers(n = 925) |
Warfarin Use (versus Nonuse) | |
|---|---|---|---|---|
| Total Hospitalizations (Hospitalizations per 100 Patient-Years) | n | HR (95% CI) | ||
| HR for hospitalization | ||||
| unadjusted model | 3360 (2.6) | 2818 (2.3) | 1671 | 1.03 (0.92 to 1.14) |
| covariate adjusted model | 1671 | 1.04 (0.92 to 1.16) | ||
| covariate and propensity score adjusted model | 1400 | 1.02 (0.90 to 1.15) | ||
| hospitalization from stroke | 65 (0.06) | 40 (0.03) | 1400 | 1.89 (1.16 to 3.09) |
| hospitalization from cardiovascular disease | 345 (0.32) | 396 (0.27) | 1400 | 1.14 (0.93 to 1.40) |
| hospitalization from bleeding | 97 (0.09) | 107 (0.07) | 1400 | 1.04 (0.73 to 1.46) |
| hospitalization from infection | 468 (0.43) | 577 (0.40) | 1400 | 0.96 (0.80 to 1.16) |
| other causes of hospitalization | 2385 (1.7) | 1698 (1.5) | 1400 | 1.03 (0.91 to 1.17) |
Incidence densities (hospitalizations per 100 patient years) were calculated using all hospitalization visits that occurred during the study enrollment period. HRs were calculated as the time to first hospitalization.